JPH11191385A - Double tube type fluorescent lamp - Google Patents
Double tube type fluorescent lampInfo
- Publication number
- JPH11191385A JPH11191385A JP35859997A JP35859997A JPH11191385A JP H11191385 A JPH11191385 A JP H11191385A JP 35859997 A JP35859997 A JP 35859997A JP 35859997 A JP35859997 A JP 35859997A JP H11191385 A JPH11191385 A JP H11191385A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- fluorescent lamp
- inner tube
- double
- getter layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011521 glass Substances 0.000 claims abstract description 32
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 9
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 9
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 150000003755 zirconium compounds Chemical class 0.000 claims description 5
- -1 phosphorus compound Chemical class 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001553 barium compounds Chemical class 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 150000002681 magnesium compounds Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 229910052756 noble gas Inorganic materials 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶ディスプレ
イ、計器用表示パネルなどのバックライトとして用いら
れる二重管形蛍光ランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-tube fluorescent lamp used as a backlight for a liquid crystal display, an instrument display panel, and the like.
【０００２】[0002]
【従来の技術】液晶ディスプレイ、計器用表示パネルな
どの背面光源として、冷陰極蛍光ランプは、幅広く使用
されており、これら表示機器の発達に伴って、−層の小
形化、高輝度化、高性能化などが望まれている。そし
て、この要求に対応するために、真空若しくは１気圧未
満の希ガスを封入した外管内に蛍光ランプを封入した二
重管形蛍光ランプが開発されている。2. Description of the Related Art Cold cathode fluorescent lamps are widely used as back light sources for liquid crystal displays and instrument display panels. There is a demand for higher performance. To meet this demand, a double-tube fluorescent lamp in which a fluorescent lamp is sealed in an outer tube in which a rare gas of a vacuum or less than 1 atm is sealed has been developed.
【０００３】図３は従来の二重管形蛍光ランプの一構成
例を示す断面図である。図３において、１は発光管とし
て機能するための水銀および希ガスが封入されたガラス
製の内管、２は前記内管１を気密に封装するガラス製の
外管である。ここで、内管１は、肉厚が 0.2〜 0.4mm程
度のガラスバルブ３と、前記ガラスバルブ３の内壁面に
形成された蛍光体被膜（発光部）４と、前記ガラスバル
ブ３内の両端側に封装され、かつ導入線５，５′と電気
的に接続された放電電極６，６′とを有する構成と成っ
ている。なお、前記導入線５，５′は、ガラスビーズ層
を介して、ガラスバルブ３に気密に封止されている場合
もある。FIG. 3 is a sectional view showing an example of the configuration of a conventional double tube fluorescent lamp. In FIG. 3, reference numeral 1 denotes a glass inner tube in which mercury and a rare gas for functioning as an arc tube are sealed, and reference numeral 2 denotes a glass outer tube hermetically sealing the inner tube 1. Here, the inner tube 1 includes a glass bulb 3 having a thickness of about 0.2 to 0.4 mm, a phosphor coating (light emitting portion) 4 formed on an inner wall surface of the glass bulb 3, and both ends in the glass bulb 3. It is configured to have discharge electrodes 6, 6 'sealed on the side and electrically connected to the introduction wires 5, 5'. The introduction lines 5 and 5 'may be hermetically sealed in the glass bulb 3 via a glass bead layer.
【０００４】また、外管２は、肉厚が 0.2〜 0.4mm程度
で、かつ内径が前記ガラスバルブ３の外径との間に隙間
７を形成する一方、前記ガラスバルブ３両端部をそれぞ
れ気密に封装・支持するとともに、前記内管１との隙間
（空間）７内を真空にするか、あるいは１気圧未満の状
態に希ガスを封入している。The outer tube 2 has a thickness of about 0.2 to 0.4 mm and an inner diameter with a gap 7 between the outer diameter of the glass bulb 3 and an airtight seal between both ends of the glass bulb 3. And a gap (space) 7 with the inner tube 1 is evacuated, or a rare gas is sealed in a state of less than 1 atm.
【０００５】なお、この種の二重管形蛍光ランプに関す
る技術としては、たとえば特開昭56-99959号公報、実開
昭61-71955号公報、特開平 2-70355号公報などがある。[0005] Techniques relating to this type of double tube fluorescent lamp include, for example, Japanese Patent Application Laid-Open Nos. 56-99959, 61-71955, and 2-70355.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前記構
成の二重管形蛍光ランプは、低電流領域で点灯した場合
所望の明るさを得られないという問題がしばしば起こ
る。たとえば液晶ディスプレイのバックライトとしての
使用において、鮮明な画像表示に要する明るさ・輝度を
十分に得られない場合がある。However, the double tube fluorescent lamp having the above-described structure often has a problem that a desired brightness cannot be obtained when the lamp is operated in a low current region. For example, when used as a backlight of a liquid crystal display, the brightness and luminance required for displaying a clear image may not be sufficiently obtained.
【０００７】本発明者らは、この点について鋭意検討を
進めた結果、二重管形蛍光ランプにおいては、内管１の
外周面と外管２の内壁面との間に形成される隙間（空
間）７内に、水分や空気などの不所望物が残留している
ことが影響していることを確認した。すなわち、前記隙
間（空間）７内に、水分や空気などが残留していると、
熱伝導度が大きくなって、低電流領域では内管１の熱が
熱伝導度によって外管２側に奪われる。したがって、内
管１が所要の温度に上昇し難くなり、結果的に、所要の
発光作用が阻害され、所望の明るさが得られないことに
なる。The inventors of the present invention have made intensive studies on this point, and as a result, in the double tube type fluorescent lamp, a gap formed between the outer peripheral surface of the inner tube 1 and the inner wall surface of the outer tube 2 (FIG. It was confirmed that undesired substances such as moisture and air remained in the (space) 7. That is, if moisture, air, or the like remains in the gap (space) 7,
The heat conductivity increases, and in the low current region, the heat of the inner tube 1 is taken away by the heat conductivity toward the outer tube 2. Therefore, the temperature of the inner tube 1 hardly rises to a required temperature, and as a result, a required light emitting action is hindered, and a desired brightness cannot be obtained.
【０００８】また、二重管形蛍光ランプの全長が長い場
合、あるいは内管１の封入ガス圧を高く設定した場合
は、低温時インバータ点灯で正常点灯が困難なときもあ
るので、通常のインバータよりも回路電圧をパワーアッ
プしたインバータを使用する必要がある。しかし、回路
電圧をパワーアップしたインバータの使用は、専用的な
点灯装置を要するというロスがあるだけでなく、二重管
形蛍光ランプおよび点灯回路を含む消費電力の増加を招
来するという問題もある。When the total length of the double-tube fluorescent lamp is long, or when the gas pressure of the inner tube 1 is set high, it may be difficult to operate the inverter normally at low temperatures. It is necessary to use an inverter with a higher circuit voltage than that of the inverter. However, the use of an inverter with an increased circuit voltage not only causes a loss that a dedicated lighting device is required, but also causes an increase in power consumption including a double-tube fluorescent lamp and a lighting circuit. .
【０００９】本発明は、上記事情に基づいてなされたも
ので、低電流領域でも、常時、所望の明るさが得られる
高性能な二重管形蛍光ランプの提供を目的とする。The present invention has been made based on the above circumstances, and an object of the present invention is to provide a high-performance double-tube fluorescent lamp which can always obtain a desired brightness even in a low current region.
【００１０】[0010]
【課題を解決するための手段】請求項１の発明は、内壁
面に蛍光体被膜が形成され、かつ水銀および希ガスが封
入されるとともに両端側に、気密に封着挿入された導入
線に接続する放電電極をそれぞれ封装したガラス製の内
管と、前記内管外表面との間に隙間を持たせて内管を気
密に封装し、かつ前記隙間がなす空間部を真空、あるい
は１気圧未満の希ガスを封入したガラス製の外管とを有
する二重管蛍光ランプであって、前記内管の放電電極間
に亘って、その内管外周面に管軸方向に沿ってライン状
のゲッター層を設けたことを特徴とする二重管形蛍光ラ
ンプである。According to the first aspect of the present invention, there is provided a lead wire which has a phosphor film formed on an inner wall surface, is filled with mercury and a rare gas, and is hermetically sealed at both ends. A gap is provided between the inner tube made of glass in which the discharge electrodes to be connected are sealed, and the outer surface of the inner tube to hermetically seal the inner tube, and the space defined by the gap is vacuum or 1 atm. A double-tube fluorescent lamp having a glass outer tube filled with a rare gas having a diameter of less than or equal to the width of the inner tube outer peripheral surface along the tube axis direction, between discharge electrodes of the inner tube. A double tube fluorescent lamp provided with a getter layer.
【００１１】請求項２の発明は、請求項１記載の二重管
形蛍光ランプにおいて、ライン状のゲッター層の幅が
0.1〜 1.0mmであることを特徴とする。According to a second aspect of the present invention, in the double tube type fluorescent lamp according to the first aspect, the width of the line-shaped getter layer is reduced.
0.1 to 1.0 mm.
【００１２】請求項３の発明は、請求項１もしくは請求
項２記載の二重管形蛍光ランプにおいて、ゲッター層が
リン、リン化合物、ジルコニウム、ジルコニウム化合
物、バリウム、バリウム化合物、マグネシウム、マグネ
シウム化合物、アルミニウム、アルミニウム化合物のう
ちの少なくともいずれか１種を含み、かつ導電性を有す
ることを特徴とする。According to a third aspect of the present invention, in the double tube fluorescent lamp according to the first or second aspect, the getter layer is phosphorus, phosphorus compound, zirconium, zirconium compound, barium, barium compound, magnesium, magnesium compound, It is characterized by containing at least one of aluminum and an aluminum compound and having conductivity.
【００１３】請求項１ないし３の発明において、ガラス
製の内管の電極間に亘って、その内管外周面に管軸方向
に沿いライン状に設けるゲッター層は、たとえばリン、
リン化合物、ジルコニウム、ジルコニウム化合物、バリ
ウム、バリウム化合物、マグネシウム、マグネシウム化
合物、アルミニウム、アルミニウム化合物のうちの少な
くともいずれか１種の導電性を有するものを含んでい
る。ここで、ライン状ゲッター層の形成は、前記ゲッタ
ー材を含むペーストの選択的な塗布・焼き付け、あるい
は前記ゲッター材の選択てきな蒸着や気相成長などで行
われ、その厚さは、 5〜20μm 程度である。According to the first to third aspects of the present invention, the getter layer provided between the electrodes of the glass inner tube in a line along the tube axis direction on the outer peripheral surface of the inner tube is made of, for example, phosphorus,
It contains at least one of phosphorus compounds, zirconium, zirconium compounds, barium, barium compounds, magnesium, magnesium compounds, aluminum, and aluminum compounds. Here, the formation of the linear getter layer is performed by selective application and baking of the paste containing the getter material, or by selective vapor deposition or vapor phase growth of the getter material, and the thickness is 5 to 5 μm. It is about 20 μm.
【００１４】また、前記ライン状のゲッター層は、始動
電圧を低下させる作用効果を考慮して、両端側に封装さ
れた放電電極間に亘って延設される。たとえば、二重管
形蛍光ランプの全長（内管の全長）50mm〜 300mm、内管
内径 1.4mm、ライン状のゲッター層の幅 0.3mmとした二
重管形蛍光ランプの始動電圧(Vrms)は、図１に曲線Ａで
示すごとくである。これに対して、前記構成において、
ライン状のゲッター層を設けなかった他は同一構成とし
た二重管形蛍光ランプの始動電圧(Vrms)は、図１に曲線
Ｂで示すごとくであり、ライン状のゲッター層の設置に
より始動電圧(Vrms)が低下する。The linear getter layer extends between the discharge electrodes sealed at both ends in consideration of the effect of lowering the starting voltage. For example, the starting voltage (Vrms) of a double-tube fluorescent lamp with the total length of the double-tube fluorescent lamp (total length of the inner tube) of 50 mm to 300 mm, the inner tube inner diameter of 1.4 mm, and the width of the line-shaped getter layer of 0.3 mm is set. , As shown by the curve A in FIG. In contrast, in the above configuration,
The starting voltage (Vrms) of the double-tube fluorescent lamp having the same configuration except that the line-shaped getter layer was not provided is as shown by a curve B in FIG. (Vrms) decreases.
【００１５】なお、内管の外周面と外管の内壁面とが形
成する隙間（空間）内に残留している水分や空気などの
除去だけを目的とした場合は、外管の内壁面にライン状
ゲッター層を設けた構成としてもよい。もちろん、内管
外周面のライン状のゲッター層の他に、ようすれば対向
させて外管の内壁面にライン状ゲッター層を設けてもよ
い。When only the removal of moisture or air remaining in the gap (space) formed by the outer peripheral surface of the inner tube and the inner wall surface of the outer tube is performed, the inner wall surface of the outer tube is A configuration in which a linear getter layer is provided may be employed. Of course, in addition to the linear getter layer on the outer peripheral surface of the inner tube, a linear getter layer may be provided on the inner wall surface of the outer tube so as to face each other.
【００１６】一方、ライン状のゲッター層の幅は、発光
管と成る内管の管径、あるいは放射光面の選択性などに
応じて、適宜設定されるが、たとえば内管の管径 1.6〜
2.0mm、管長50〜 300mm程度で、全方位が放射光面のと
き、ゲッター層の幅を 1.0mmとしても、ライン状のゲッ
ター層を設けない場合に比べて全光束の低下は10％程度
である。つまり、ゲッター層の幅は狭いほど好ましい
が、安定した作用効果を考慮すると、 0.1〜 1.0mm程度
が好ましい。On the other hand, the width of the linear getter layer is appropriately set according to the diameter of the inner tube serving as the arc tube or the selectivity of the radiated light surface.
2.0 mm, tube length of about 50 to 300 mm, and in all directions a synchrotron radiation plane, even if the width of the getter layer is 1.0 mm, the total luminous flux is reduced by about 10% compared to the case without a linear getter layer. is there. In other words, the narrower the getter layer is, the more preferable it is.
【００１７】請求項１〜３の発明では、発光管を成す内
管の外周面に光の放射を実質的に損なわない程度のライ
ン状ゲッター層を付設したあるため、外管内壁面とで形
成する空間部に水分や空気などが残留していても、容易
に吸着・除去する。したがって、前記空間部における熱
伝導度の上昇・増大などが抑制防止されるので、内管の
発光温度が容易に保持されて、所要の発光輝度が得られ
る。According to the first to third aspects of the present invention, since the linear getter layer is provided on the outer peripheral surface of the inner tube constituting the arc tube so as not to substantially impair the emission of light, the inner tube is formed by the inner wall surface of the outer tube. Even if moisture or air remains in the space, it is easily absorbed and removed. Therefore, an increase or an increase in the thermal conductivity in the space portion is prevented from being suppressed, so that the emission temperature of the inner tube is easily maintained, and required emission luminance is obtained.
【００１８】特に、ライン状ゲッター層がと導電性を有
する場合は、放電電極間の放電発生が起こり易くなるの
で、ランプ全長が長くても比較的低い始動電圧で点灯す
る。In particular, when the linear getter layer has conductivity, discharge between the discharge electrodes is likely to occur, so that the lamp is lit at a relatively low starting voltage even if the lamp has a long overall length.
【００１９】[0019]
【発明の実施の形態】以下、図２ (a)， (b)を参照して
実施例を説明する。An embodiment will be described below with reference to FIGS. 2 (a) and 2 (b).
【００２０】図２ (a)は二重管形蛍光ランプの要部構成
を示す断面図、図２ (b)は図２ (a)の A-A線に沿った断
面図である。図２ (a)， (b)において、１は発光管とし
て機能するための水銀および希ガスが封入されたガラス
製の内管、２は前記内管１を気密に封装するガラス製の
外径 2.6mm程度の外管である。ここで、内管１は、肉厚
が 0.2〜 0.4mm程度、長さが 150mm程度の硬質のガラス
バルブ３と、前記ガラスバルブ３の内壁面に形成された
蛍光体被膜（発光部）４と、前記ガラスバルブ３内の両
端側に封装され、かつ導入線５，５′と電気的に接続さ
れた放電電極６，６′と、前記ガラスバルブ３の外周面
に管軸方向に沿って、かつ封装されている放電電極６，
６′間に亘って設けられたライン状のゲッター層８を設
けたを有する構成と成っている。FIG. 2A is a cross-sectional view showing a configuration of a main part of the double tube fluorescent lamp, and FIG. 2B is a cross-sectional view along the line AA in FIG. 2A. 2 (a) and 2 (b), reference numeral 1 denotes a glass inner tube filled with mercury and a rare gas to function as an arc tube, and 2 denotes a glass outer diameter for hermetically sealing the inner tube 1. The outer tube is about 2.6mm. The inner tube 1 includes a hard glass bulb 3 having a thickness of about 0.2 to 0.4 mm and a length of about 150 mm, and a phosphor coating (light emitting portion) 4 formed on an inner wall surface of the glass bulb 3. A discharge electrode 6, 6 'sealed at both ends in the glass bulb 3 and electrically connected to the introduction wires 5, 5', and an outer peripheral surface of the glass bulb 3 along the tube axis direction; And sealed discharge electrode 6,
The configuration has a linear getter layer 8 provided between 6 ′.
【００２１】なお、前記導入線５，５′は、ガラスビー
ズ層を介して、ガラスバルブ３に気密に封止されている
場合もあり、また、前記ライン状のゲッター層８は、厚
さ 5〜20μm 程度、幅 0.1〜 1.0mm程度で、ジルコニウ
ムおよひジルコニウム化合物を含有したものである。The introduction lines 5, 5 'may be hermetically sealed in the glass bulb 3 via a glass bead layer, and the line-shaped getter layer 8 has a thickness of 5 mm. It is about 20 .mu.m in width and about 0.1 to 1.0 mm in width and contains zirconium and a zirconium compound.
【００２２】さらに、外管２は、肉厚が 0.2〜 0.4mm程
度で、かつ内径が前記ガラスバルブ３の外径との間に隙
間７を形成する一方、長さは、前記ガラスバルブ３両端
部をそれぞれ気密に封装・支持するとともに、前記ガラ
スバルブ３との隙間（空間）７内を真空にするか、ある
いは１気圧未満の状態に希ガスを封入している。Further, the outer tube 2 has a thickness of about 0.2 to 0.4 mm and an inner diameter which forms a gap 7 with the outer diameter of the glass bulb 3, while the outer bulb 2 has a length between both ends of the glass bulb 3. Each part is hermetically sealed and supported, and the space (space) 7 with the glass bulb 3 is evacuated, or a rare gas is sealed in a state of less than 1 atm.
【００２３】上記構成の二重管形蛍光ランプにおいて
は、発光管を成す内管１の外周面に、すなわち内管１を
封装する外管２との空間部で、かつ放電電極６，６′間
に亘って配設したゲッター層８により、その空間部に残
留する不所望なガス類が容易に吸着されるので、前記空
間部が高い真空状態などを容易に保持する。したがっ
て、発光管を成す内管１の熱放出が抑制され、所要の放
電発光が効率よく行われるので、信頼性の高い、かつ高
輝度の光源として機能する。また、前記ゲッター層８を
補助電極的に機能させることにより、低電圧での始動が
可能となる。In the double tube fluorescent lamp having the above structure, the discharge electrodes 6 and 6 'are provided on the outer peripheral surface of the inner tube 1 forming the arc tube, that is, in the space between the inner tube 1 and the outer tube 2. Undesired gases remaining in the space are easily adsorbed by the getter layer 8 disposed therebetween, so that the space can easily maintain a high vacuum state or the like. Therefore, heat release from the inner tube 1 constituting the arc tube is suppressed, and required discharge light emission is efficiently performed, so that the light source functions as a highly reliable and high-luminance light source. In addition, by making the getter layer 8 function as an auxiliary electrode, starting at a low voltage becomes possible.
【００２４】なお、本発明は実施例に限定されるもので
なく、発明の趣旨を逸脱しない範囲でいろいろの変形を
採ることができる。たとえば、ガラス製の内管１および
外管２の寸法（ガラス管の肉厚、内・外径、長さ）、ラ
イン状ゲッター層を形成する素材も、ジルコニウムおよ
ひジルコニウム化合物以外の、前記例示した他の素材を
選択してしようできる。また、二重管形蛍光ランプは、
直管形に限らず、Ｌ字形、Ｃ字形、Ｕ字形、Ｗ字形など
の曲管形や、その他の異形であってもよい。The present invention is not limited to the embodiments, and various modifications can be made without departing from the spirit of the invention. For example, the dimensions of the inner tube 1 and the outer tube 2 made of glass (thickness, inner / outer diameter, and length of the glass tube) and the material for forming the linear getter layer are also the same as those described above except for zirconium and zirconium compounds. Other materials shown in the examples can be selected. The double tube fluorescent lamp is
The shape is not limited to the straight tube shape, but may be a curved tube shape such as an L shape, a C shape, a U shape, or a W shape, or another irregular shape.
【００２５】[0025]
【発明の効果】請求項１〜３の発明によれば、二重管形
化による高性能化などが、より効果的に図られた二重管
形蛍光ランプが容易に提供される。すなわち、高性能化
や高品質性などが望まれている液晶ディスプレイ用、あ
るいは計器用表示パネル用などに適する信頼性や高性能
を有するだけでなく、小形化や軽量化などを容易に図る
ことができる二重管形蛍光ランプを提供できる。According to the first to third aspects of the present invention, it is possible to easily provide a double tube fluorescent lamp in which the performance is improved more effectively by the double tube shape. In other words, it not only has reliability and high performance suitable for liquid crystal displays or instrument display panels for which high performance and high quality are desired, but also easily achieves miniaturization and weight reduction. The present invention can provide a double-tube fluorescent lamp that can be used.
【図１】実施例に係る二重管形蛍光ランプおよび従来の
二重管形蛍光ランプについて、ランプ全長と始動電圧と
の関係例を比較して示す曲線図。FIG. 1 is a curve diagram showing a comparative example of the relationship between the lamp length and the starting voltage for a double tube fluorescent lamp according to an embodiment and a conventional double tube fluorescent lamp.
【図２】実施例に係る二重管蛍光ランプの要部構成を示
すもので、 (a)は全体の縦断面図、 (b)は (a)の A-A線
に沿った横断面図。FIGS. 2A and 2B show a main part configuration of a double tube fluorescent lamp according to an embodiment, in which FIG. 2A is a longitudinal sectional view of the whole, and FIG. 2B is a transverse sectional view taken along line AA in FIG.
【図３】従来の二重管形蛍光ランプの要部構成を示す縦
断面図。FIG. 3 is a longitudinal sectional view showing a configuration of a main part of a conventional double tube fluorescent lamp.
１……ガラス製の内管 ２……ガラス製の外管 ３……ガラスバルブ ４……蛍光体被膜 ５，５′……導入線 ６，６′……放電電極 ７……内管と外管との隙間 ８……ライン状ゲッター層 DESCRIPTION OF SYMBOLS 1 ... Inner tube made of glass 2 ... Outer tube made of glass 3 ... Glass bulb 4 ... Phosphor coating 5,5 '... Introduction line 6,6' ... Discharge electrode 7 ... Inner tube and outer Gap with pipe 8 ... Linear getter layer
Claims (3)
銀および希ガスが封入されるとともに両端側に、気密に
封着挿入された導入線に接続する放電電極をそれぞれ封
装したガラス製の内管と、 前記内管外表面との間に隙間を持たせて内管を気密に封
装し、かつ前記隙間がなす空間部を真空、あるいは１気
圧未満の希ガスを封入したガラス製の外管とを有する二
重管蛍光ランプであって、 前記内管の放電電極間に亘って、その内管外周面に管軸
方向に沿ってライン状のゲッター層を設けたことを特徴
とする二重管形蛍光ランプ。1. A glass material having a phosphor film formed on an inner wall surface, mercury and a rare gas being sealed therein, and discharge electrodes connected to inlet lines hermetically sealed at both ends. A gap is provided between the inner tube and the outer surface of the inner tube to hermetically seal the inner tube, and the space defined by the gap is vacuum or a glass outer tube filled with a rare gas of less than 1 atm. A double-tube fluorescent lamp having a tube, wherein a linear getter layer is provided along the tube axis direction on the outer peripheral surface of the inner tube, between the discharge electrodes of the inner tube. Double tube fluorescent lamp.
mmであることを特徴とする請求項１記載の二重管形蛍光
ランプ。2. The method according to claim 1, wherein the width of the line-shaped getter layer is 0.1 to 1.0.
2. The double-tube fluorescent lamp according to claim 1, wherein the diameter is mm.
ニウム、ジルコニウム化合物、バリウム、バリウム化合
物、マグネシウム、マグネシウム化合物、アルミニウ
ム、アルミニウム化合物のうちの少なくともいずれか１
種を含み、かつ導電性を有することを特徴とする請求項
１もしくは請求項２記載の二重管形蛍光ランプ。3. The getter layer is formed of at least one of phosphorus, phosphorus compound, zirconium, zirconium compound, barium, barium compound, magnesium, magnesium compound, aluminum, and aluminum compound.
3. The double-tube fluorescent lamp according to claim 1, wherein the fluorescent lamp contains a seed and has conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35859997A JP3874517B2 (en) | 1997-12-25 | 1997-12-25 | Double tube fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35859997A JP3874517B2 (en) | 1997-12-25 | 1997-12-25 | Double tube fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11191385A true JPH11191385A (en) | 1999-07-13 |
| JP3874517B2 JP3874517B2 (en) | 2007-01-31 |
Family
ID=18460151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35859997A Expired - Fee Related JP3874517B2 (en) | 1997-12-25 | 1997-12-25 | Double tube fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3874517B2 (en) |
-
1997
- 1997-12-25 JP JP35859997A patent/JP3874517B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3874517B2 (en) | 2007-01-31 |
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